razor clam — any bivalve mollusk of the family Solenidae, esp. of the genus Ensis, having a long, rectangular, slightly curved shell. Also called jackknife clam. [1880 85, Amer.] * * * Any of several species of marine clams (family Solenidae) common in… … Universalium

razor clam — ra′zor clam n. ivt any narrow, elongated bivalve mollusk of the family Solenidae, having a shell with razor sharp edges • Etymology: 1880–85, amer … From formal English to slang

razor clam — noun A clam of several species with long curved shells resembling straight razors … Wiktionary